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You are watching: 2004 dodge ram ambient air temperature sensor location


I have an 04 Cummins common rail installed in a 2004 F250 with a DCS conversion kit done by a previous owner.I am trying to locate the "Ambient Air Temperature" sensor. Apparenty, this sensor is located somewhere near the front of the radiator support on the Dodge truck and is needed for proper engine function. I cannot find the lead for it on my ENGINE harness, it may have been snipped off. I am throwing the code P0073 for this sensor.Can someone locate the sensor for me and tell me where it comes off the engine harness? OR it on the truck chassis wiring harness?Thanks!
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That sensor is for the overhead display, the one you want is on the airbox.... It is an ambient air temp and barometer combo sensor... The sensor comes off the wiring harness over by the alternator.
AFE PG7 drop in filter, AFE Torque Tube, HTT 2.5 turbo, AFE e-mani, ATS Arc Flo, 50HP DDP , 463k, HPTuners, G56, 25.065 mpg, mpg threads ->MPG threads
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P0073 was for the IAT (Inlet Air Temp) sensor, the one before the turbo, on the diesel.On the gas engine its for the Ambient Temp Sensor in front of the radiator.
_________________"05 2500 QC SLT SB 4X4 48RE Smarty Jr 205k milesBaldwin FB1311 + Donaldson P551313 (3 Micron) + Baldwin PF7977
Thanks for the reply guys. So, the IAT was located on the stock Dodge intake tube. I have a custom tube for the F250 application. I will look at the harness on the passenger side to see if I can find the lead.
Found it! Right behind the alternator. Unfortunately, they cut off the plug for the sensor. Hopefully I can find one.
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Thanks for the reply guys. So, the IAT was located on the stock Dodge intake tube.
I have a custom tube for the F250 application. I will look at the harness on the passenger side to see if I can find the lead.
No that"s the ambient air temp sensor/barometer... 2 different sensors, the IAT is on the intake manifold right next to the fuel rail. That sensor is an IAT/MAP sensor combo...There is a link in my sig that has links to the service manual... download one that is for your year motor and you"ll be able to find the wiring colors for the sensor. Wire up the sensor and place it near the air filter... You want to do this because if there are ECU changes that occur based on the barometer and intake air temp you will want to make sure it gets a reasonably accurate reading. Looking at HP Tuners tables there are 4 tables for different altitudes, not sure whats in the OEM setup.

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AFE PG7 drop in filter, AFE Torque Tube, HTT 2.5 turbo, AFE e-mani, ATS Arc Flo, 50HP DDP , 463k, HPTuners, G56, 25.065 mpg, mpg threads ->MPG threads
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P0073 was for INLET AIR, air before turbo, not INTAKE AIR.If you call it IAT then IAT = Inlet Air Temp.On the schematic the sensor after turbo was referred as MAP sensor.The sensor before the turbo was referred as Inlet Air Temp sensor.Each sensor would senses pressure and temp.MAP would creates different codes.
_________________"05 2500 QC SLT SB 4X4 48RE Smarty Jr 205k milesBaldwin FB1311 + Donaldson P551313 (3 Micron) + Baldwin PF7977
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